GUACAMOLE-630: Do not contain entire field nor entire header within <label>.

Enclosing the entire field within the <label> results in problems when
the field is large and when the field contains multiple interactive
elements. Clicking within interactive elements of a complex field
triggers the <label>, refocusing the first input element. If the field
is large, the <label> will contain empty space which also refocuses the
input field upon being clicked, despite appearing to be the background
of the page.

guacamole/src/main/webapp/app/form/templates/timeField.html

@@ -1,5 +1,6 @@
 <div class="time-field">
     <input type="time"
+           ng-attr-id="{{ fieldId }}"
            ng-model="typedValue"
            ng-model-options="modelOptions"
            guac-lenient-time